Island



Patented Apr'. I8-, |899. D. J. MCOSKEH 0. F. GARVEY.

SAFETY COCK FOR GAS 0B LIGUIDS.

(Application led Mar. 7, 18

(No Model.)

Y ttozmm pipe to the fixture.

iINiTnD STATES PATENT Orricn.

DANIEL J. MGOSKER AND OVEN E. GARVEY, OF PROVIDENCE, RIIODE ISLAND, ASSIGNORS OF ONE-THIRD TO GEORGE E. PALMER, OF CRANSTON, RHODE ISLAND.

SAFETY-COCK FOR GAS OR LIQUIDS.

SPECIFICATION forming part of Letters Patent No. 623,331, dated April 18, 1899.

Application filed March 7, 1898. Serial No. 672,878. No model.)

To all whom t may concern:

Be it known that we, DANIEL J. MCOSKER and OWEN F. GARvEY, of Providence, in the State of Rhode Island, have made certain new and useful Improvements in Safety-Cocks for Gas or Liquids 5 and we do hereby declare that the following specification, taken inconnection with the drawings making a part of the saine, is a full, clear, and exact descriptio thereof.

Figure lis a central vertical section through the entire device, the valve being in the closed position. Fig. 2 is a similar view with the valve in the open position. Fig. 3 is a top plan view of the key-guide with the key in place, illustrating the cooperative relation between the key-lugs and the stop-lugs upon the guide. Fig. 4 is a detail perspective view of the valve. Fig. 5 is a similar view of the guide. Fig. 6 is a detail view of the spring M.

Referring to the letters of reference on the drawings, A indicates lthe rear end of a gas or other fixture, which is attached, as usual, to the gas or other pipe.

B indicates Ithe cock or valve casing,throu gh which the gas or other iiuid passes from the The casing is preferably provided with a closed top and with a more or less conical valve-seat C, in which is seated a tapering rotary valve D, provided in its lower end with a central circular recess E, from which extend diametrically opposite radial recesses F.

G indicates an axial pin or. stud within the recess E for a purpose to be made apparent.

H indicates a key-guide or cap which is forced into the lower end of the valve-seat and secured in any suitable manner. This guide has an axial aperture or liared bore I, from which extend diametrically opposite radial recesses K, and upon its upper end are formed a pair of limiting-lugs L, extending within a narrow spiral spring or split ring M, which when the parts are assembled is intermediate of the guide and valve and is designed toconstantly urge the valve snugly within its seat to compensate for wear.

N indicates a key the stem of which is hollow for the reception of a pin or plunger O, provided at its extremity with an enlargement or collar P, against which bears one end of the spiral spring Q,surroundingthe plunger and bearing at'its opposite end against the solid portion ofthe key.

R R indicate radial lugs projecting from the end of the key-stern.

The device being organized as described and in the closed position, the key is passed through the guide H until the stud G contacts with the plunger in the key. The key is now urged inward against the resistance opposed by the spring Q until the key-lugs R R are in engagement with the recesses F in the valve. The turning of the key will now cause the valve to be rotated until the port or opening through the valve is brought into coincidence with the opening through the valvecasing, at which time the lower edges of the key-lugs R R (which project below the valve) will come into contact with the stop-lugs L and will prevent further rotation of the parts. It will now be seen that the key-lugs have been moved out of coincidence with the recesses K in the guide, which makes impossible the withdrawal of the key in this the open position of the valve. The valve may now be turned back to its closed position, and as soon as the key-l ugs come into apposition with the recesses K the spring Q will expel the key.

The key D maybe attached to the iixture by a short chain, if desired, or it may be carried in the pocket or put in a safe place convenient for use. v

It will now be readily seen that so long as the key D remains in place the gas will flow and that with the removal of the key the gas is shut off and cannot be turned on again without the deliberate act of again inserting and turning the key, thus avoiding all danger of accident from escaping gas. The use of the key is especially desirable in places where the presence of a light is dangerous, as it makes it possible to put the care of the light in the hands of a careful and competent person,withoutwhose presence it cannot be used.

The devices herein described are also useful and are designed in part for use in connection with liquids which are valuable or which require careful handling.

W'hat we claim isl. The combination with a valve-.casing and valve provided with a central opening and IOO diametrically opposite recesses in one end, of a key-guide seated Within the bottom of the casing and provided with a central opening and radial recesses, a hollow key provided with external lugs and a spring-actuated pin within the key designed to eject the key from the valve in a given position of the latter, substantially as specified.

2. The combination with a valve-casing and valve provided with a central recess in one end and with radial recesses extending from the central recess, of a key-guide within the bottom of the casing provided with a central opening and radiall recess, a spring between the key-guide and valve, a hollow key provided With external lugs and longitudinallymovable pin Within the key and having an enlargement, and a spring surrounding the pin and designed to urge it into operative relation with the valve whereby both springs serve to urge the valve uponits seat when the 'key is inserted, substantially as speciiied.

3. The combination with a valve-casing and Valve provided with recesses in one end, of a lkey-guide provided with a central opening,

radial recesses and with limiting-lugs upon its upper face, and a key provided with lugs designed to engage the recesses in the valve and to abut against the lugs upon the keyguide to limit the rotation of the valve, substantially as specified.

DANIEL J. MCOSKER. OWEN F. GARVEY. Titn esses:

WALTER B. VINCENT, HUBERT A. RICE. 

